From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Will Thompson Date: Wed, 11 Jul 2018 15:41:09 +0100 Subject: [PATCH] blscfg: sort BLS entries by 'version' field MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This partially reverts ‘Use BLS fragment filename as menu entry id and for criteria to sort’. Sorting by filename only gives the correct order if the BLS entries are generated by a version of ostree after this patch https://github.com/ostreedev/ostree/commit/9f48e212a3bf9ed418fb3216e4f834d581bc520e to use the version (higher is newer) in the filename. Older ostrees, including all releases at the time of writing, use the index (lower is newer) in the filename, so sorting by filename produces the reverse order. Sorting by 'version' field matches libostree's own compare_boot_loader_configs(), so I think it's more correct than relying on the filename, particularly since we've already gone to the trouble of parsing all the fields in the file. Signed-off-by: Will Thompson --- grub-core/commands/blscfg.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c index b61dddb7f..9c928dda4 100644 --- a/grub-core/commands/blscfg.c +++ b/grub-core/commands/blscfg.c @@ -327,10 +327,26 @@ finish: return ret; } +/* return 1: p0 is newer than p1 */ +/* 0: p0 and p1 are the same version */ +/* -1: p1 is newer than p0 */ static int bls_cmp(const void *p0, const void *p1, void *state UNUSED) { struct bls_entry * e0 = *(struct bls_entry **)p0; struct bls_entry * e1 = *(struct bls_entry **)p1; + const char *v0, *v1; + int r; + + v0 = bls_get_val(e0, "version", NULL); + v1 = bls_get_val(e1, "version", NULL); + + if (v0 && !v1) + return -1; + if (!v0 && v1) + return 1; + + if ((r = vercmp(v0, v1)) != 0) + return r; return vercmp(e0->filename, e1->filename); }